SELECT 
  * 
FROM 
  jmj_product_feature_variants 
WHERE 
  variant_id IN (
    3246, 3247, 20, 25, 60, 1, 2, 36, 37, 45, 
    46, 72, 74, 69, 269, 65, 332, 333, 1675, 
    1676, 2242, 2243, 2244, 2245, 768, 769, 
    2250, 3156, 771, 2103, 2108, 2112, 2136, 
    2137, 2141, 2155, 2164, 2173, 2192, 
    2203, 2225, 2229, 766
  )

Query time 0.02207

JSON explain

{
  "query_block": {
    "select_id": 1,
    "cost_info": {
      "query_cost": "103.21"
    },
    "table": {
      "table_name": "jmj_product_feature_variants",
      "access_type": "range",
      "possible_keys": [
        "PRIMARY"
      ],
      "key": "PRIMARY",
      "used_key_parts": [
        "variant_id"
      ],
      "key_length": "3",
      "rows_examined_per_scan": 43,
      "rows_produced_per_join": 43,
      "filtered": "100.00",
      "index_condition": "(`jmj_test`.`jmj_product_feature_variants`.`variant_id` in (3246,3247,20,25,60,1,2,36,37,45,46,72,74,69,269,65,332,333,1675,1676,2242,2243,2244,2245,768,769,2250,3156,771,2103,2108,2112,2136,2137,2141,2155,2164,2173,2192,2203,2225,2229,766))",
      "cost_info": {
        "read_cost": "94.61",
        "eval_cost": "8.60",
        "prefix_cost": "103.21",
        "data_read_per_join": "66K"
      },
      "used_columns": [
        "variant_id",
        "feature_id",
        "url",
        "color",
        "position",
        "abt__ut2_color_style",
        "abt__ut2_multicolor"
      ]
    }
  }
}