Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '55b53b87fe4f6e93cb8220897db74b2d0d3e77f45fa22ed5f5e671cbf891fc0c' 
  AND token = '6869ghtPzWJ7g0V76Q9YvxyXGxxLxKSxgNYIaRSGWlc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00045

JSON explain

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