Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e9c6be401e1cce20c772aab5e8a742d8b585ebfed26ce4b7fca9bb96711dda12' 
  AND token = 'G9917fIzjuxXq0BAeqeuOxVjjeXsa9m307gzvInhMkE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

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