SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '725becaf0f4369b9b8dd95cd63b60a18cd8a5a9bb369caf3dfe598de132cc157' 
  AND token = 'Y1G+iZIf/754VsG2UP33USLRut+jA8WpmRxKIQFEbzU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00039

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