Starting an event by mouse hover AND a key input

Hello, good people!

I’m very new here, so this could sound as a stupid question, but I’m stuck.

So I’m trying to start an event by hovering mouse over an object (the object lights up) and while the mouse is on top of the object I want to use a keyboard key to actually start the event.
I have my “E” key bind as an “use” key. What can I do to get unstuck.

Thanks a million.