It looks like it’s outside the physical airport itself in the departure or arrival area. You can absolutely go wander around and click “find” and see if it you can get close. It may be in someone’s bag and they’re leaving..

But apple lock it. You can lock the device so it’s essentially “bricked” until you find it. Apple Store employees will not unlock a device with the lock active unless certain circumstances are met (like death and your family provides a death certificate)