UPDATE 
  cscart_lock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = '6L/P5aPnURMJfEVTtiKUoK5BCbtxtU0XoIftgP44kIE=' 
WHERE 
  key_id = '9421fa245c683c3a8e17e1f401dd169505d42409bd99d670d1dbab749ff44540' 
  AND (
    token = '6L/P5aPnURMJfEVTtiKUoK5BCbtxtU0XoIftgP44kIE=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )