Here's one captured on 17 August around 10:56 UTC. I'm in the UK. This rarely (never?) happens if I just search for the same thing again, and of course as I'm typing this, this specific search is fast.
I shared the above with a friend and 20 minutes later he sent me a screenshot of a 6.04s search time, unfortunately didn't capture what it was for. On that day quite a few searches were slow like this but I don't seem to have any more screenshots.