SELECT 
  cscart_products.*, 
  cscart_products.ebay_status, 
  cscart_products.ebay_template_id 
FROM 
  cscart_products 
WHERE 
  cscart_products.product_id IN (
    22015, 22016, 22017, 22018, 22019, 22020, 
    22021, 22022, 22023, 22024, 22025, 
    22026, 22027, 22028, 22029, 22030
  )

Query time 0.00036

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 (22015,22016,22017,22018,22019,22020,22021,22022,22023,22024,22025,22026,22027,22028,22029,22030)"
    }
  }
}