UPDATE 
  q_lock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'qfCU3fGj64wkm+0yDK6X4/OkfM6nncLOWLHrJzUZlVs=' 
WHERE 
  key_id = '4b68d0940e86cef20399ffea1ed3403b57b9d0b29512b252c9620732e8258d91' 
  AND (
    token = 'qfCU3fGj64wkm+0yDK6X4/OkfM6nncLOWLHrJzUZlVs=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )