SELECT 
  cscart_products.* 
FROM 
  cscart_products 
WHERE 
  cscart_products.product_id IN (
    10048, 10062, 10070, 10058, 10045, 10054, 
    10047, 10071, 10067, 10051, 10060, 
    10055, 10043, 10068, 10065, 10061, 
    10050, 10056, 10044, 10069
  )

Query time 0.00045

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": 20,
      "filtered": 100,
      "index_condition": "cscart_products.product_id in (10048,10062,10070,10058,10045,10054,10047,10071,10067,10051,10060,10055,10043,10068,10065,10061,10050,10056,10044,10069)"
    }
  }
}