UPDATE 
  cscart_lock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'x5lYvtlLgNtwqeH3USr0fFgTXyiBuDT5HPyDYWiJsFk=' 
WHERE 
  key_id = '51c28562158c1861119488f60df0f664830d5b35caa622351a6032d59ab1ca41' 
  AND (
    token = 'x5lYvtlLgNtwqeH3USr0fFgTXyiBuDT5HPyDYWiJsFk=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )