SELECT 
  cscart_products.* 
FROM 
  cscart_products 
WHERE 
  cscart_products.product_id IN (
    65598, 65870, 65875, 65689, 65853, 65864, 
    65877, 65874, 65863, 65869, 65868, 
    65862, 65693, 65850, 65606, 65604, 
    65880, 65852, 65605, 65692, 65600, 
    65855, 65607, 65599
  )

Query time 0.00095

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,
      "attached_condition": "cscart_products.product_id in (65598,65870,65875,65689,65853,65864,65877,65874,65863,65869,65868,65862,65693,65850,65606,65604,65880,65852,65605,65692,65600,65855,65607,65599)"
    }
  }
}

Result