SELECT 
  * 
FROM 
  cscart_product_feature_variants 
WHERE 
  variant_id IN (
    1661, 523, 597, 1, 1737, 182, 1672, 441, 
    1644, 1634, 1652, 1715, 1649, 429, 1702, 
    1746, 1706, 1708, 1748, 1642, 1671, 
    433, 513, 1805, 1709, 1711, 1712, 1670, 
    1669, 1665, 1667, 1662, 1735, 1739, 
    1680, 1740, 1682, 276, 1633, 1688, 1619, 
    1714, 460, 1638, 447, 122, 121, 440, 
    127, 439, 1349, 362, 438, 149, 246, 120, 
    1705, 1656, 279, 1716, 1668, 1804, 430, 
    448, 1620, 442, 1663, 1640, 1653, 1666, 
    1623, 1635, 1713, 1738, 1630, 1645, 
    1677, 1658, 1741, 1664, 146, 431, 446, 
    59, 50, 58, 147, 98, 280, 469, 1673, 1637, 
    1627, 1629, 206, 170, 1646, 1628, 165
  )

Query time 0.00076

JSON explain

{
  "query_block": {
    "select_id": 1,
    "cost_info": {
      "query_cost": "69.31"
    },
    "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": 99,
      "rows_produced_per_join": 99,
      "filtered": "100.00",
      "index_condition": "(`test_uchur_k`.`cscart_product_feature_variants`.`variant_id` in (1661,523,597,1,1737,182,1672,441,1644,1634,1652,1715,1649,429,1702,1746,1706,1708,1748,1642,1671,433,513,1805,1709,1711,1712,1670,1669,1665,1667,1662,1735,1739,1680,1740,1682,276,1633,1688,1619,1714,460,1638,447,122,121,440,127,439,1349,362,438,149,246,120,1705,1656,279,1716,1668,1804,430,448,1620,442,1663,1640,1653,1666,1623,1635,1713,1738,1630,1645,1677,1658,1741,1664,146,431,446,59,50,58,147,98,280,469,1673,1637,1627,1629,206,170,1646,1628,165))",
      "cost_info": {
        "read_cost": "59.41",
        "eval_cost": "9.90",
        "prefix_cost": "69.31",
        "data_read_per_join": "153K"
      },
      "used_columns": [
        "variant_id",
        "feature_id",
        "url",
        "color",
        "position",
        "abt__ut2_color_style",
        "abt__ut2_multicolor"
      ]
    }
  }
}