UPDATE 
  cscart_lock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = '3nxMys3pDqV5HLmsybXRQh1xm6kgfwSVKEirlqH7nDU=' 
WHERE 
  key_id = '05c961a09a582150d4eb833dd7e2f87693f19d125381c2f729f1362718427793' 
  AND (
    token = '3nxMys3pDqV5HLmsybXRQh1xm6kgfwSVKEirlqH7nDU=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )