Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0d2f709226525444d569df4f83ac11af23fe1af392f65409306220b4f682b8ee' 
  AND token = '8R6H+jbbnAp22QhIw2VvCsuK5Z8lNTO6Mc1z4IF2LP8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00047

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}