Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ffa2329e5c7fc5487836b3670dc595fb8cbfc47ecd34dc13f637f331868e9741' 
  AND token = 'qxq7IPGtt1mwrf2a6DdaZKUwYGFjNfOERz9f9gRXHZU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00016

JSON explain

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