UPDATE 
  cscart_lock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'iV/NqxoIRgxcUcszFOMgXcqBIE8b0GVYYMIU5rjru/4=' 
WHERE 
  key_id = '68ebd45a644d5152008d4a0909ce9457043fabd7171666c575f2f8906468335f' 
  AND (
    token = 'iV/NqxoIRgxcUcszFOMgXcqBIE8b0GVYYMIU5rjru/4=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )