SELECT 
  * 
FROM 
  cscart_product_feature_variants 
WHERE 
  variant_id IN (
    1, 125, 126, 367, 211, 462, 473, 460, 1327, 
    1335, 1332, 1293, 1304, 485, 487, 478, 
    122, 121, 127, 439, 438, 149, 246, 120, 
    124, 123, 152, 461, 481, 479, 234, 146, 
    483, 486, 480, 482, 58, 147, 12, 14, 11, 
    10, 8, 7, 26, 1294, 1295, 263, 421, 422, 
    111, 1296, 313, 237, 238, 475, 484, 469, 
    467, 217, 232, 472, 477, 170, 476, 165
  )

Query time 0.00062

JSON explain

{
  "query_block": {
    "select_id": 1,
    "cost_info": {
      "query_cost": "46.21"
    },
    "table": {
      "table_name": "cscart_product_feature_variants",
      "access_type": "range",
      "possible_keys": [
        "PRIMARY"
      ],
      "key": "PRIMARY",
      "used_key_parts": [
        "variant_id"
      ],
      "key_length": "3",
      "rows_examined_per_scan": 66,
      "rows_produced_per_join": 66,
      "filtered": "100.00",
      "index_condition": "(`test_uchur_k`.`cscart_product_feature_variants`.`variant_id` in (1,125,126,367,211,462,473,460,1327,1335,1332,1293,1304,485,487,478,122,121,127,439,438,149,246,120,124,123,152,461,481,479,234,146,483,486,480,482,58,147,12,14,11,10,8,7,26,1294,1295,263,421,422,111,1296,313,237,238,475,484,469,467,217,232,472,477,170,476,165))",
      "cost_info": {
        "read_cost": "39.61",
        "eval_cost": "6.60",
        "prefix_cost": "46.21",
        "data_read_per_join": "102K"
      },
      "used_columns": [
        "variant_id",
        "feature_id",
        "url",
        "color",
        "position",
        "abt__ut2_color_style",
        "abt__ut2_multicolor"
      ]
    }
  }
}