Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'f96e0be1440e9d53b5c9daaaea69db7d741045485568a50840c59331531944a2' 
  AND token = '9nFlnWiHlQaam2ReVunQfqx4ZkLY3qYJmBnozsgYIlw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00048

JSON explain

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