Writing to RLS-enabled table fails even with Service Key

const supabase = createClient(
  'process.env.DB_URL,
  process.env.SUPABASE_SECRET_KEY
)
const { data, error } = await supabase
  .from('user_tokens')
  .insert([{ token_read_key: code, token: session.access_token }])

error: new row violates row-level security policy for table