SELECT 
  cscart_products.* 
FROM 
  cscart_products 
WHERE 
  cscart_products.product_id IN (
    4718, 4793, 4774, 4776, 4078, 4779, 4777, 
    4792, 4787, 4858, 4786, 4790, 4778, 
    4856, 4860, 4796, 4797, 4795, 4794, 
    4857, 5006, 4878, 4112, 4110
  )

Query time 0.00054

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 (4718,4793,4774,4776,4078,4779,4777,4792,4787,4858,4786,4790,4778,4856,4860,4796,4797,4795,4794,4857,5006,4878,4112,4110)"
    }
  }
}