Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'a32fb640bbe761f9f4bd4a5aa9fdddcf4d62550534cfc1721a44d95d6b61777a' 
  AND token = 'dA+aeEtgNGpYUdz1mhC2Wu33osKh8WjsJiNJaaaEhkU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00036

JSON explain

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