Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '14caa9d6df3814182b4f9968e7c105a8e3677a742f590cb90ddf0bcac54362bc' 
  AND token = '2Y4kdEKeJrfjsWoTyzM4ynseElheB6Ir95tBOnvJP2o=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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