Just to give anyone who could search for this some extra informaiton, here was the exact sql statement
“select * from wp_options where option_name like “%_category_%_start_date%”
where start_date is the name of my field.
Thanks again for your speedy answer.
My apologies, my head is wrapped around my goal. The access_pin is just a field that will be unique to a specific category. Do you have any examples of using the save_post action?