It may well show up on your background check with Sears. I do not know Oklahoma law and therefore do not know the effect of any expungement you received there. Even if your records were sealed, companies that do background checks could have learned of your plea from a variety of sources.
Hope not. Companies ten to take a dim view of false statements about your past. Especially when it is recent.
If it were just a local company, you might not have much to worry about. Empahsis is on the word might.
The above is not intended as legal advice. The response does not constitute the creation of an attorney client relationship as this forum does not provide for a confidential communication.