Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'fa0824daefbfd26930ad71e02d2301bd2f0e08e610cbfb747fd27504ebff7473' 
  AND token = '9bjuhNWtcP5UHjLV5EoOmUeMUYnOYEC5wYlvaNKZEX8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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