UPDATE 
  cscart_multi_declock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'HOxg6Q39jUni9smB2zzIwKedd3obd2E7ITom0ytDfJQ=' 
WHERE 
  key_id = '40a21c2b93eb85ac72a4b8c497f29779e7cbb983fc70a31055623e5a21fceec4' 
  AND (
    token = 'HOxg6Q39jUni9smB2zzIwKedd3obd2E7ITom0ytDfJQ=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )