CREATE TABLE IF NOT EXISTS password_resets (
    id INT AUTO_INCREMENT PRIMARY KEY,
    email VARCHAR(255) NOT NULL,
    token VARCHAR(64) NOT NULL UNIQUE,
    expires_at DATETIME NOT NULL,
    used TINYINT(1) NOT NULL DEFAULT 0,
    created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
    INDEX idx_token (token),
    INDEX idx_email (email)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;