Can't get the key of webform's select field in the results
It is a bit of a pain. Looks like you have to do this each time, but here goes...

Go to your Webform in question...


Click the Results tab
Click the Download button
Open the Select List Options section
Under Select Keys, choose "Short, raw options (keys)"
Set any other options as you need and then click Download


You should have a file where the select option columns are populated with the keys rather than the values.