$query in SQL code

$query

SELECT 
  Products.id AS `Products__id` 
FROM 
  products Products 
  INNER JOIN websites Websites ON Websites.id = 1 
  INNER JOIN products_websites ProductsWebsites ON (
    Products.id = (ProductsWebsites.product_id) 
    AND Websites.id = (ProductsWebsites.website_id)
  ) 
  INNER JOIN product_info ProductInfo ON (
    ProductInfo.sku = '307793-002' 
    AND ProductInfo.id = (Products.product_info_id)
  ) 
WHERE 
  (
    (reservation_id) IS NULL 
    AND size = '4.5Y'
  ) 
LIMIT 
  3