SELECT 
  cscart_products.* 
FROM 
  cscart_products 
WHERE 
  cscart_products.product_id IN (
    154, 53, 52, 228, 161, 165, 166, 86, 106, 
    105, 247, 101, 33, 32, 163, 244
  )

Query time 0.00079

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": 16,
      "filtered": 100,
      "index_condition": "cscart_products.product_id in (154,53,52,228,161,165,166,86,106,105,247,101,33,32,163,244)"
    }
  }
}