SELECT 
  * 
FROM 
  jmj_product_feature_variants 
WHERE 
  variant_id IN (
    3246, 3247, 2103, 2105, 2106, 2107, 2108, 
    2109, 2110, 2111, 2112, 2117, 2119, 
    2120, 2122, 2123, 2126, 2130, 2133, 
    2134, 2135, 2136, 2137, 2138, 2139, 
    2140, 2141, 2146, 2149, 2154, 2155, 
    2162, 2163, 2164, 2165, 2166, 2168, 
    2169, 2171, 2172, 2173, 2179, 2182, 
    2190, 2191, 2192, 2193, 2194, 2199, 
    2200, 2201, 2202, 2208, 2209, 2210, 
    2211, 2212, 2213, 2215, 2219, 2220, 
    2221, 2222, 2224, 2225, 2229, 2231, 
    2239, 3238, 766
  )

Query time 0.01104

JSON explain

{
  "query_block": {
    "select_id": 1,
    "cost_info": {
      "query_cost": "168.01"
    },
    "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": 70,
      "rows_produced_per_join": 70,
      "filtered": "100.00",
      "index_condition": "(`jmj_test`.`jmj_product_feature_variants`.`variant_id` in (3246,3247,2103,2105,2106,2107,2108,2109,2110,2111,2112,2117,2119,2120,2122,2123,2126,2130,2133,2134,2135,2136,2137,2138,2139,2140,2141,2146,2149,2154,2155,2162,2163,2164,2165,2166,2168,2169,2171,2172,2173,2179,2182,2190,2191,2192,2193,2194,2199,2200,2201,2202,2208,2209,2210,2211,2212,2213,2215,2219,2220,2221,2222,2224,2225,2229,2231,2239,3238,766))",
      "cost_info": {
        "read_cost": "154.01",
        "eval_cost": "14.00",
        "prefix_cost": "168.01",
        "data_read_per_join": "108K"
      },
      "used_columns": [
        "variant_id",
        "feature_id",
        "url",
        "color",
        "position",
        "abt__ut2_color_style",
        "abt__ut2_multicolor"
      ]
    }
  }
}