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SELECT 
  storefronts.* 
FROM 
  cscart_storefronts AS storefronts 
WHERE 
  1 = 1 
  AND (
    storefronts.url = 'g-cars.nl' 
    OR storefronts.url = 'www.g-cars.nl' 
    OR storefronts.url LIKE 'www_.g-cars.nl' 
    OR storefronts.url LIKE 'g-cars.nl/%' 
    OR storefronts.url LIKE 'www.g-cars.nl/%' 
    OR storefronts.url LIKE 'www_.g-cars.nl/%'
  ) 
GROUP BY 
  storefronts.storefront_id 
ORDER BY 
  storefronts.url = 'g-cars.nl' DESC, 
  storefronts.url = 'www.g-cars.nl' DESC, 
  storefronts.url LIKE 'www_.g-cars.nl' DESC, 
  storefronts.url LIKE 'g-cars.nl/%' DESC, 
  storefronts.url LIKE 'www.g-cars.nl/%' DESC, 
  storefronts.url LIKE 'www_.g-cars.nl/%' desc

Query time 0.00013

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "table_name": "storefronts",
      "access_type": "system",
      "rows": 1,
      "filtered": 100
    }
  }
}

Result

storefront_id	url	redirect_customer	is_default	status	access_key	name	theme_name	is_accessible_for_authorized_customers_only
1	www.g-cars.nl	Y	Y	N	Pietsieb59	G-Cars	abt__unitheme2	N