UPDATE 
  cscart_lock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'mymVaY8+3XklbQOtzLw59FOjetzJDkBBgbGP2GNmyus=' 
WHERE 
  key_id = '751009647de033a5ae561705efa3e186a72163aeaf4b18c9244db15c870cd2aa' 
  AND (
    token = 'mymVaY8+3XklbQOtzLw59FOjetzJDkBBgbGP2GNmyus=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )