Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '82ea1d88754d273e6ddfa2d4da5992398c2cd8016a08ea9791aec161f46581d7' 
  AND token = 'aoQEO+PgTQtVDPphQ4O0CrmZYO46cXe9NCjRxtJAg4k=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00037

JSON explain

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