The Key to the Realm should probably last an hour with how stupidly rare it is.

Even the bronze Key to the Realm which is an Elite rarity item is rare (more rare than Mythics opened from boxes) and only a handful of them are in the game despite probably thousands of boxes being opened.

Having only 5 minutes to enchant items will cause players to speed enchant items and result in players accidentally getting rid of stats that they wanted to keep.

In addition, players received 48 hour access to gold farming zones in the past as rewards for events. 5 minutes for such a rare Key to the Realm is hardly worth it in my opinion.

I would either increase the rate of keys dropping from boxes or increase the time of the key/elixir to an hour instead of 5 minutes.