Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '76fae138dc7b7c323876122073a1a0e41f9eb7fd5ffbe693d813819e900d7063' 
  AND token = 'VBd7cgbOudhQwy80EPgjVK6RQ8EHz7gAvURHRDt1hco=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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