Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd96d82d5f6ec1fd17d4c942c5997655ee47801530d1c9f9d7cfa597a49013fb2' 
  AND token = 'y0FzTXd65Qk6VF6nwStdXIUK8BoaLmeLeaoJPg3BkUw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00036

JSON explain

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