UPDATE 
  cscart_lock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'n8z518sKiJUZlKoSfbt7kbfrfPlJh2Fcd8nCq8eVxFs=' 
WHERE 
  key_id = '20795d19bad8bdff9f390e732e51f5e6623d252354491ac79318a32d00de0526' 
  AND (
    token = 'n8z518sKiJUZlKoSfbt7kbfrfPlJh2Fcd8nCq8eVxFs=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )