UPDATE 
  cscart_lock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'epjS8VtoCNCSUEunYbnzD4H8BqekHIhE2pl5ATKAf0A=' 
WHERE 
  key_id = '8a634f6ebec2349562280e4019351cd94c37dee598891e12966ac926c2601dd2' 
  AND (
    token = 'epjS8VtoCNCSUEunYbnzD4H8BqekHIhE2pl5ATKAf0A=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )