SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '7ceb3deb950f77e9717e31e08424e24d4917cd7b82fa888fb63d0a1f03cdf5f7' 
  AND token = 'aFBOpn0XF9C+xCG9ophDVphxQPSiqfWvCicwKKcROYU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}