UPDATE 
  cscart_lock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'n2zmW8BWFi2j9GhvxjzZDVNCt715sJZjzmw8HvaHoBo=' 
WHERE 
  key_id = '915935d788d47ee4c72151e1527bedba05938cb26fde1abb1f19f2fd619b3573' 
  AND (
    token = 'n2zmW8BWFi2j9GhvxjzZDVNCt715sJZjzmw8HvaHoBo=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )