Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '61fc38fa146aff8c62f7e9f1df6eacb4adbb610c54687446d751dfa29313778c' 
  AND token = 'K4kzNnPdifcbAUNglXqksp/7cx15DMNQE9X9R3kZsqQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00025

JSON explain

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