Plumber's putty takes years to harden and even then it's still malleable by hand. Put your finger or two in the drain and move it from side to side with all of your strength If it slowly moves or worse, then it needs tightened.
Normally. Warm water will make that happen. Just take a knife and go around the edge of the drain flange to scrape out the excess.
I mean at worst just give it an extra bit of tightening...