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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '13f9f7ab3974555c02f965bcaf1fc529ca8fdbf2935ae4e37ab3a93964d84e0d' 
  AND token = 'drl4FDRX2yOIUjitHPGjIeSXkNCjWONngavzg5bDlA4=' 
  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