u/ChelKurito

As the title says.

You could run through while clicking on the the key as you pass by, or you notice it after having started gathering from a node, and so on. Perhaps it'd have a large, obvious bubble aura around it, similar to a Diving Blessing?

EDIT:

I was more focused on thinking about actions getting interrupted and path-queuing shenanigans under latency when I made this suggestion; I hadn't thought about the role some puzzle rooms might play in blocking them out.