SELECT 
  cscart_products.* 
FROM 
  cscart_products 
WHERE 
  cscart_products.product_id IN (
    1603, 1602, 1601, 1600, 1599, 1598, 1597, 
    1565, 1586, 1577, 1595, 1594, 1593, 
    1591, 1590, 1589, 1588, 1587, 1579, 
    1585, 1584, 1514, 1583, 1582
  )

Query time 0.00113

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "table_name": "cscart_products",
      "access_type": "range",
      "possible_keys": ["PRIMARY"],
      "key": "PRIMARY",
      "key_length": "3",
      "used_key_parts": ["product_id"],
      "rows": 24,
      "filtered": 100,
      "index_condition": "cscart_products.product_id in (1603,1602,1601,1600,1599,1598,1597,1565,1586,1577,1595,1594,1593,1591,1590,1589,1588,1587,1579,1585,1584,1514,1583,1582)"
    }
  }
}