On a locked BeCM, it won't even display the EKA (or the lockset barcode for that matter) for security reasons. The EKA is stored in the BeCM not the key so the only thing you will need to do is sync the key in the door lock as a 97 won't have the passive sync feature like a later car. Put the key in the door lock with all doors and tailgate closed, turn the key to lock and hold it there, while holding it there, press and hold the lock button on the fob until the LED flashes faster, release the button on the fob then turn the key back to centre. Then repeat only turning to unlock and pressing the unlock button on the fob. That should put it into sync and allow the remote to lock and unlock the car.
However, I'm slightly confused. You say you ordered a key from JLR but from numerous posts on rr.net, NAS keyfobs are NLA. NAS fobs use 315MHz instead of 433MHz like ones used in most of the rest of the world. This is down to the FCC. Radio frequency use ideally needs to be coordinated between adjoining countries so the EU proposed the use of 433MHz back in the 1980's. As RF doesn't know where one country stops and another starts (that is Radio Frequencies not the Russian Federation), it makes sense for the same frequency to be used across continents. However, as the US is isolated, in as much as it only has land borders with Mexico and Canada, you are forced to use the same as the USA. Hence 315MHz is used in Canada and if you ordered a replacement fob and gave them the VIN number, they would know it was 315MHz and, as far as I was aware, you'd be told they are no longer available. Unless JLR have listened to those on the opposite side of the Atlantic and have produced another batch of 315MHz fobs.
While you can lock an unlocked BeCM with a Nanocom, once locked it stays that way. They were programmed at the factory to an individual car then lock it so nobody can go in and mess things up.