UPDATE 
  cscart_lock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'zn2GOjcGliGaH8CpEBxBCHpxF1HCvZI3+vMTcO+XJZc=' 
WHERE 
  key_id = '6fde5de919afbde425363bd0625b79fe1e65665e8560b35e410ff254498de620' 
  AND (
    token = 'zn2GOjcGliGaH8CpEBxBCHpxF1HCvZI3+vMTcO+XJZc=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )