SELECT 
  cscart_products.* 
FROM 
  cscart_products 
WHERE 
  cscart_products.product_id IN (
    1692, 1695, 1694, 1693, 1691, 1690, 1688, 
    1678, 1680, 1681, 1664, 1687, 1685, 
    1684, 1677, 1644, 1674, 1673, 1672, 
    1671, 1670, 1669, 1668, 1667
  )

Query time 0.00123

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 (1692,1695,1694,1693,1691,1690,1688,1678,1680,1681,1664,1687,1685,1684,1677,1644,1674,1673,1672,1671,1670,1669,1668,1667)"
    }
  }
}