UPDATE 
  cscart_lock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'NIaE4PegeiWpqn2/kJLR53ruEqjhdnzzMPkOugWOWec=' 
WHERE 
  key_id = '51670d0c8c41d7594204f0685178a9876d33b637ced3279de87802e8c2227780' 
  AND (
    token = 'NIaE4PegeiWpqn2/kJLR53ruEqjhdnzzMPkOugWOWec=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )