Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '5f2cb890d82a118760c8d340aa759ce6e1204930a5fe10ed91463dbd77ce962c' 
  AND token = 'Nss9+FsuPPcJyjVwikUhbRTs8J7tR2Lo/Oh2gV5cHsI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00034

JSON explain

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