SELECT 
  a.variant_id, 
  a.option_id, 
  a.position, 
  a.modifier, 
  a.modifier_type, 
  a.weight_modifier, 
  a.weight_modifier_type, 
  a.point_modifier, 
  a.point_modifier_type, 
  b.variant_name, 
  IF(
    shared_option_variants.variant_id IS NOT NULL, 
    shared_option_variants.modifier, 
    a.modifier
  ) as modifier, 
  IF(
    shared_option_variants.variant_id IS NOT NULL, 
    shared_option_variants.modifier_type, 
    a.modifier_type
  ) as modifier_type 
FROM 
  cscart_product_option_variants as a 
  LEFT JOIN cscart_product_option_variants_descriptions as b ON a.variant_id = b.variant_id 
  AND b.lang_code = 'it' 
  LEFT JOIN cscart_ult_product_option_variants shared_option_variants ON shared_option_variants.variant_id = a.variant_id 
  AND shared_option_variants.company_id = 1 
WHERE 
  a.option_id IN (
    249, 384, 442, 500, 259, 393, 451, 509, 
    214, 350, 408, 466, 239, 375, 433, 491, 
    246, 382, 440, 498, 256, 390, 448, 506, 
    257, 391, 449, 507, 258, 392, 450, 508, 
    255, 389, 447, 505, 215, 351, 409, 467, 
    143, 332, 4165, 225, 361, 419, 477, 247, 
    383, 441, 499, 216, 352, 410, 468, 233, 
    369, 427, 485, 238, 374, 432, 490, 240, 
    376, 434, 492, 244, 380, 438, 496, 4157, 
    4168, 241, 377, 435, 493, 251, 386, 444, 
    502, 235, 371, 429, 487, 220, 356, 414, 
    472, 231, 367, 425, 483
  ) 
  AND a.status = 'A' 
ORDER BY 
  a.position, 
  a.variant_id

Query time 0.00269

JSON explain

{
  "query_block": {
    "select_id": 1,
    "cost_info": {
      "query_cost": "449.21"
    },
    "ordering_operation": {
      "using_filesort": true,
      "cost_info": {
        "sort_cost": "137.00"
      },
      "nested_loop": [
        {
          "table": {
            "table_name": "shared_option_variants",
            "access_type": "system",
            "possible_keys": [
              "PRIMARY",
              "company_id"
            ],
            "rows_examined_per_scan": 0,
            "rows_produced_per_join": 1,
            "filtered": "0.00",
            "const_row_not_found": true,
            "cost_info": {
              "read_cost": "0.00",
              "eval_cost": "0.20",
              "prefix_cost": "0.00",
              "data_read_per_join": "24"
            },
            "used_columns": [
              "variant_id",
              "company_id",
              "modifier",
              "modifier_type"
            ]
          }
        },
        {
          "table": {
            "table_name": "a",
            "access_type": "range",
            "possible_keys": [
              "status",
              "option_id",
              "option_id_2"
            ],
            "key": "option_id",
            "used_key_parts": [
              "option_id",
              "status"
            ],
            "key_length": "6",
            "rows_examined_per_scan": 137,
            "rows_produced_per_join": 137,
            "filtered": "100.00",
            "index_condition": "((`eshopuga_upgr_4122`.`a`.`option_id` in (249,384,442,500,259,393,451,509,214,350,408,466,239,375,433,491,246,382,440,498,256,390,448,506,257,391,449,507,258,392,450,508,255,389,447,505,215,351,409,467,143,332,4165,225,361,419,477,247,383,441,499,216,352,410,468,233,369,427,485,238,374,432,490,240,376,434,492,244,380,438,496,4157,4168,241,377,435,493,251,386,444,502,235,371,429,487,220,356,414,472,231,367,425,483)) and (`eshopuga_upgr_4122`.`a`.`status` = 'A'))",
            "cost_info": {
              "read_cost": "257.41",
              "eval_cost": "27.40",
              "prefix_cost": "284.81",
              "data_read_per_join": "6K"
            },
            "used_columns": [
              "variant_id",
              "option_id",
              "position",
              "modifier",
              "modifier_type",
              "weight_modifier",
              "weight_modifier_type",
              "point_modifier",
              "point_modifier_type",
              "status"
            ]
          }
        },
        {
          "table": {
            "table_name": "b",
            "access_type": "eq_ref",
            "possible_keys": [
              "PRIMARY"
            ],
            "key": "PRIMARY",
            "used_key_parts": [
              "variant_id",
              "lang_code"
            ],
            "key_length": "9",
            "ref": [
              "eshopuga_upgr_4122.a.variant_id",
              "const"
            ],
            "rows_examined_per_scan": 1,
            "rows_produced_per_join": 137,
            "filtered": "100.00",
            "cost_info": {
              "read_cost": "0.00",
              "eval_cost": "27.40",
              "prefix_cost": "312.21",
              "data_read_per_join": "104K"
            },
            "used_columns": [
              "variant_id",
              "lang_code",
              "variant_name"
            ]
          }
        }
      ]
    }
  }
}

Result

variant_id option_id position modifier modifier_type weight_modifier weight_modifier_type point_modifier point_modifier_type variant_name
748 332 0 0.000 A 0.000 A 0.000 A
778 350 0 0.000 A 0.000 A 0.000 A
780 351 0 0.000 A 0.000 A 0.000 A
782 352 0 0.000 A 0.000 A 0.000 A
790 356 0 0.000 A 0.000 A 0.000 A
800 361 0 0.000 A 0.000 A 0.000 A
812 367 0 0.000 A 0.000 A 0.000 A
816 369 0 0.000 A 0.000 A 0.000 A
820 371 0 0.000 A 0.000 A 0.000 A
826 374 0 0.000 A 0.000 A 0.000 A
828 375 0 0.000 A 0.000 A 0.000 A
830 376 0 0.000 A 0.000 A 0.000 A
832 377 0 0.000 A 0.000 A 0.000 A
838 380 0 0.000 A 0.000 A 0.000 A
842 382 0 0.000 A 0.000 A 0.000 A
844 383 0 0.000 A 0.000 A 0.000 A
846 384 0 0.000 A 0.000 A 0.000 A
850 386 0 0.000 A 0.000 A 0.000 A
856 389 0 0.000 A 0.000 A 0.000 A
858 390 0 0.000 A 0.000 A 0.000 A
860 391 0 0.000 A 0.000 A 0.000 A
862 392 0 0.000 A 0.000 A 0.000 A
864 393 0 0.000 A 0.000 A 0.000 A
894 408 0 0.000 A 0.000 A 0.000 A
896 409 0 0.000 A 0.000 A 0.000 A
898 410 0 0.000 A 0.000 A 0.000 A
906 414 0 0.000 A 0.000 A 0.000 A
916 419 0 0.000 A 0.000 A 0.000 A
928 425 0 0.000 A 0.000 A 0.000 A
932 427 0 0.000 A 0.000 A 0.000 A
936 429 0 0.000 A 0.000 A 0.000 A
942 432 0 0.000 A 0.000 A 0.000 A
944 433 0 0.000 A 0.000 A 0.000 A
946 434 0 0.000 A 0.000 A 0.000 A
948 435 0 0.000 A 0.000 A 0.000 A
954 438 0 0.000 A 0.000 A 0.000 A
958 440 0 0.000 A 0.000 A 0.000 A
960 441 0 0.000 A 0.000 A 0.000 A
962 442 0 0.000 A 0.000 A 0.000 A
966 444 0 0.000 A 0.000 A 0.000 A
972 447 0 0.000 A 0.000 A 0.000 A
974 448 0 0.000 A 0.000 A 0.000 A
976 449 0 0.000 A 0.000 A 0.000 A
978 450 0 0.000 A 0.000 A 0.000 A
980 451 0 0.000 A 0.000 A 0.000 A
747 332 1 2.000 A 0.000 A 0.000 A
777 350 1 9.000 A 0.000 A 0.000 A
779 351 1 9.000 A 0.000 A 0.000 A
781 352 1 9.000 A 0.000 A 0.000 A
789 356 1 9.000 A 0.000 A 0.000 A
799 361 1 9.000 A 0.000 A 0.000 A
811 367 1 9.000 A 0.000 A 0.000 A
815 369 1 9.000 A 0.000 A 0.000 A
819 371 1 9.000 A 0.000 A 0.000 A
825 374 1 9.000 A 0.000 A 0.000 A
827 375 1 9.000 A 0.000 A 0.000 A
829 376 1 9.000 A 0.000 A 0.000 A
831 377 1 9.000 A 0.000 A 0.000 A
837 380 1 9.000 A 0.000 A 0.000 A
841 382 1 9.000 A 0.000 A 0.000 A
843 383 1 9.000 A 0.000 A 0.000 A
845 384 1 9.000 A 0.000 A 0.000 A
849 386 1 9.000 A 0.000 A 0.000 A
855 389 1 9.000 A 0.000 A 0.000 A
857 390 1 9.000 A 0.000 A 0.000 A
859 391 1 9.000 A 0.000 A 0.000 A
861 392 1 9.000 A 0.000 A 0.000 A
863 393 1 9.000 A 0.000 A 0.000 A
893 408 1 2.000 A 0.000 A 0.000 A
895 409 1 2.000 A 0.000 A 0.000 A
897 410 1 2.000 A 0.000 A 0.000 A
905 414 1 2.000 A 0.000 A 0.000 A
915 419 1 2.000 A 0.000 A 0.000 A
927 425 1 2.000 A 0.000 A 0.000 A
931 427 1 2.000 A 0.000 A 0.000 A
935 429 1 2.000 A 0.000 A 0.000 A
941 432 1 2.000 A 0.000 A 0.000 A
943 433 1 2.000 A 0.000 A 0.000 A
945 434 1 2.000 A 0.000 A 0.000 A
947 435 1 2.000 A 0.000 A 0.000 A
953 438 1 2.000 A 0.000 A 0.000 A
957 440 1 2.000 A 0.000 A 0.000 A
959 441 1 2.000 A 0.000 A 0.000 A
961 442 1 2.000 A 0.000 A 0.000 A
965 444 1 2.000 A 0.000 A 0.000 A
971 447 1 2.000 A 0.000 A 0.000 A
973 448 1 2.000 A 0.000 A 0.000 A
975 449 1 2.000 A 0.000 A 0.000 A
977 450 1 2.000 A 0.000 A 0.000 A
979 451 1 2.000 A 0.000 A 0.000 A