CREATE TABLE IF NOT EXISTS refresh_sessions (
    id TEXT PRIMARY KEY,
    user_id TEXT NOT NULL,
    token TEXT NOT NULL UNIQUE,
    expires_at TIMESTAMPTZ NOT NULL,
    created_at TIMESTAMPTZ NOT NULL
);
CREATE INDEX IF NOT EXISTS idx_refresh_sessions_token ON refresh_sessions(token);
CREATE INDEX IF NOT EXISTS idx_refresh_sessions_user_id ON refresh_sessions(user_id);
CREATE INDEX IF NOT EXISTS idx_refresh_sessions_expires_at ON refresh_sessions(expires_at);