Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e43219e4f0c0d8469814d049a1e5578ae275f108e3097c275800d3e155494a69' 
  AND token = 'e8J5IRZnbPBMC0TgXZKkWB9kv37WthyiJ9E9xWhSZfs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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