Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'f8193644eccb320a7b032c8165e8f6f2955b08b7df8854b7502426460c5c767e' 
  AND token = 'Ah/o4bToaXnMoqx0yZKaIP9OdCNajvslG8H0Ldes/Z8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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