UPDATE 
  cscart_lock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'Pr2kaX3TndvgjGGcrAZYC3qG7mUqbT+oCbOTdbeVsOI=' 
WHERE 
  key_id = '81b0d0a670e2d1fc28b962a17921422a146667ca8dc30cdfdfafc7213111c1d3' 
  AND (
    token = 'Pr2kaX3TndvgjGGcrAZYC3qG7mUqbT+oCbOTdbeVsOI=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )