UPDATE 
  cscart_multi_declock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'Mb6q2jpncuMjsgaYvqSfvLerPoCDoYXmMcLA6nPHRhI=' 
WHERE 
  key_id = '81a79492234fdb9255aebee0ecea62f328d78a742450ab965c22f7093b545aee' 
  AND (
    token = 'Mb6q2jpncuMjsgaYvqSfvLerPoCDoYXmMcLA6nPHRhI=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )