I have a kenmore self cleaning range(oven)
I clicked on the cleaning buttons as usual, it went through the cleaning cycle.
But will not shut off, and it is locked up, has been for an abnormal amount of time(overnight) The oven stove is basically locked up and I cannot use it.
Is there any way I can unlock it?

Have you tried turning off breaker or unplugging.
You may try pushing a button(s) for 5 seconds and see.
Not sure that Model? What model do you have?