查询来检查单词是否存在php MySQL?游戏如拼字游戏

Hello I was looking to do some work to create some game like scrabble where it would be taking a user inputted string and check if the letters make up a real word. Assuming you have a list of all English words, roughly one million entries, would it take a long time to check if, say "zoo" exists? What would a game like this do if that takes a long time? Hello I was looking to do some work to create s