UPDATE 
  cscart_lock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'PUDLdHvbljjSVWmIVy21vKiIgvxVcCbCU6nR5sX8SuY=' 
WHERE 
  key_id = '921b16fa6fad372eee0670b884d685bdf952e2f0210289887a3824891d828314' 
  AND (
    token = 'PUDLdHvbljjSVWmIVy21vKiIgvxVcCbCU6nR5sX8SuY=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )