Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '55be2968d5f751be093b8c2ad38a69e2432629cc0050871d05bf623bb11aebba' 
  AND token = 'lCWBDoRF81PQ2Tu1e23EYXkyFJZrU4qyFiJkj6UClzc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00043

JSON explain

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