Key will not turn in the ignition

This could be a couple things but if you have tried rocking the steering wheel and turn the key at the same time and that did not work, try using a little WD 40 in the cylinder and see if that will work it free.

Here is a guide that will help with this issue and give some more ideas:

https://www.2carpros.com/articles/ignition-switch-wont-turn-stuck

Once we try these two things, we may need to try another key. Hopefully you have a spare. If none of this works then I suspect the ignition solenoid has failed. I attached the info below on this but hopefully one of the items above or in the link will help.

Let us know what happens.