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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd00144301ddd6b084924f2ad61a00026b87a3f8eedeae98f2dc287c428285bdd' 
  AND token = 'vSGMEne7Hy8qxGmYF4sYGbwq2dpsfhB5C9EN0qXQc2M=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00016

Explain
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	SIMPLE								Impossible WHERE noticed after reading const tables