Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '744fedb1112facda4cafb855918d6a093fa78e48a5c9be87f356fd1f190be219' 
  AND token = '6D5No3jYKAdrhAtZIe4iL6RFA664MsR7deFZmQWyUFg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00039

JSON explain

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