UPDATE 
  cscart_multi_declock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'vS83yMmwM58Y3ohdw0PMtQrxIgKxibkjltVW7GqHaMY=' 
WHERE 
  key_id = '55f1d2195a2b75cefd57f00abb76954224d9c63933e01e23a9082b0f7cfc8a4a' 
  AND (
    token = 'vS83yMmwM58Y3ohdw0PMtQrxIgKxibkjltVW7GqHaMY=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )