Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e961b653d574c18f68cfab242bdbe88e831256440b6c44b56d1b396f69c29210' 
  AND token = '1iVIYRbXbwibkSU6U1zwt8SGtO7ShM+ZmWXVNhZORWA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00037

JSON explain

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