UPDATE 
  cscart_multi_declock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'ou529ef/5TBynOCqTgdpEx5++mhS8XXV0bJuagUExYw=' 
WHERE 
  key_id = 'c6a86c6a570964c26ea04b76d826526137e0c0e2dee0207f62ccb491acf2af74' 
  AND (
    token = 'ou529ef/5TBynOCqTgdpEx5++mhS8XXV0bJuagUExYw=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )