UPDATE 
  cscart_lock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'TtTgnPDM80HhzKnYsDcjlq9WDqwn8TI3yXDqe6OFLHM=' 
WHERE 
  key_id = '8b21a985531c7442667b9fcf2b219051b77cf5f8cff52bc3cafa5f86021bcc9f' 
  AND (
    token = 'TtTgnPDM80HhzKnYsDcjlq9WDqwn8TI3yXDqe6OFLHM=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )

Query time 0.00021