Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0c70ab490a940bd14feaf49e9b4efd76f13eec93e64a51b2c38697129e665c20' 
  AND token = 'rj7WrO1eF8KoAGGIqW19ZycOUN8tDKbM2CjtJytPHU0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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