limiting mdfind on Terminal to files changed in the last x minutes/hours? It's relatively simple to use find to look for recent files.

find . -cmin -5 will look for all files changed in the last 5 minutes under the current directory.

But find is very much slower than mdfind, which is powered by Spotlight's index when you search the whole machine.

What is the simplest way, on the terminal, to ask mdfind to only look for files modified in the last 5 minutes?  Every time I look at the Apple doc I get totally lost as to what you actually type on the command line.
You would use the time variable- $time.now and subtract the number of seconds- $time.now(-300) to get 5 minutes before the current time. Next, you would use the operator &gt;= for the comparison. To put it all together-

 mdfind -onlyin . 'kMDItemFSContentChangeDate &gt;= $time.now(-300)'