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

Query time 0.00021

JSON explain

{
  "query_block": {
    "select_id": 1,
    "nested_loop": [
      {
        "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.buby.at	N	Y	N	790004278daa4f9007cc35d1b3dd84af	BUBY-Shop	abt__unitheme2	N