Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '9bd13e218bbbedc3a847811e53acc9cef62cbf0b4806c1ccc0f9729261d2a94b' 
  AND token = '+jMG2qBJa02aQ2We+8jbF8wdTAoyZg9W+ZcMLfEQMdA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00037

JSON explain

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