How do I reset a condition?

Hi!
I have created a binary sensor for my car plate. It turns to “True” if my camera spots it. Then it stays true. Forever. How do I automaticly do so it will turn into “False” after 1 minut?
This is my Yaml that created the sensor:

  - platform: template
    sensors:
      plate_recognizer3:
        friendly_name: "UHC989"
        value_template: "{{ state_attr('image_processing.platerecognizer_blueiris_garageuppfarten', 'watched_plates').uhc989 }}"