UPDATE 
  cscart_lock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'iTdcV2jnImZ1GznFz4vw0AWP53T29epSlb3rRpU9OHk=' 
WHERE 
  key_id = 'a6d39233707eab4baf38180b3a813c8d2748a25665312ba9e2ed38fccf1c4dd6' 
  AND (
    token = 'iTdcV2jnImZ1GznFz4vw0AWP53T29epSlb3rRpU9OHk=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )

Query time 0.00039