UPDATE 
  cscart_lock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'xo8EJNPq7IrzxvnhrNf7V81EIIzUj3CC6d8EGCz1YXU=' 
WHERE 
  key_id = '9f28c8d5bde19f981fbb750729caaadeaa024714de59e6f34848ca43e44e7c1e' 
  AND (
    token = 'xo8EJNPq7IrzxvnhrNf7V81EIIzUj3CC6d8EGCz1YXU=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )

Query time 0.00051