UPDATE 
  cscart_lock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'GU81XYGqiHZzIvuZbH5MdiKjHgM/EbyXfyQLt2qDnO0=' 
WHERE 
  key_id = '52fe50c798ca3cd138a098ea6622b953f933c1aeeed79cd7d1ea119a0048fb78' 
  AND (
    token = 'GU81XYGqiHZzIvuZbH5MdiKjHgM/EbyXfyQLt2qDnO0=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )