Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'f8e7648fccc3d77a0e9e7fcea1b4acad9f5fd20e4092594a30782ffeaaec8215' 
  AND token = 'MiOfcuB9AZlKZeuB/70K78srdTZP5l2rPJqclvbKx6k=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00014

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}