UPDATE 
  cscart_lock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'mWiHhIGjy7wZ0E6Cq473GG32zahl2latAh+/VU0UOFk=' 
WHERE 
  key_id = '50971f2868f05452922bc59c6aaa7a49a329ef654d54f85036a86e3881346081' 
  AND (
    token = 'mWiHhIGjy7wZ0E6Cq473GG32zahl2latAh+/VU0UOFk=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )