UPDATE 
  cscart_multi_declock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'Gt7e27AKHsRd9k3ECQVkIlBiyx2Q1X3RIJswt/PXtqg=' 
WHERE 
  key_id = '4fd35f7c3babce1a5b9bb486c60b0356e0eaeaaacee51e5f649f5c5ec07cf821' 
  AND (
    token = 'Gt7e27AKHsRd9k3ECQVkIlBiyx2Q1X3RIJswt/PXtqg=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )