UPDATE 
  cscart_lock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'CRrPXqmPDbfHF5iRme8RMeahot3GUXUPH1VrIZO9I6k=' 
WHERE 
  key_id = '51e68b37cb4da6663b25c13d7a235d02327459695e4286557d4a2930375d026e' 
  AND (
    token = 'CRrPXqmPDbfHF5iRme8RMeahot3GUXUPH1VrIZO9I6k=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )