When I have a file open, I'd like to have a shortcut to navigate to this file inside the explorer, so that I can see where it is located. How can I do this?
In the command palette (F1), there is a Files: Reveal Active File in Side Bar
command. You can assign a shortcut to it via the keyboard shortcuts editor:
Alternatively, you could try the Reveal extension which adds this button to editors:
It might make sense to disable auto-reveal when using this shortcut as a "manual reveal":
"explorer.autoReveal": false