Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '239244fc93f81d6d5aee4fa630848773ad8fd90d7017d4588e3172fde0b8d831' 
  AND token = '/7fC/sBkmgKzy4HcXq4n0lQPj2ZukjhJdz8q3qCIciQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

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