Yes but should we ?
LOCK OR NO LOCK
My opinion... probably no.
Locked in rates are usually higher than variable rates.
Now, in times of uncertainty (the war in Ukraine, economic expansion in a covid-recovery period) it might seem tempting... lock in to protect against increasing interest rates. But such problems are unlikely to last long term, and you could lock in at a high interest rate, only to find that the rates start to fall again before the end of your mortgage term.
I've made the same mistake... my first mortage occured right before the latest Quebec referendum. I locked in at a high rate, thinking the uncertainty caused by the referendum would cause interest rates to increase. But the problem was short lived.
Your best option is to get a variable-rate mortgage with a fixed payment amount. That way you 1) get the lowest possible interest rates don't increase (or the increase is only for a short term), and 2) you won't have to worry about increased payments even if interest rates go up. (At worst it would mean you don't pay as much on the principle.)
(I want to stress that I am not a financial expert Take everything I say with a grain of salt.)