Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '05d580dfa4d2c0af6d09fca8a046daee8452ccb10941d7db3b346fc0661e0d34' 
  AND token = 'IoUNqwPMy5SOTjidp6jh9s0XoKuGav01lJWmFwmDIxg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00022

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}