Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '5c50747f85530e9d6e3335b7bc6982fa756af469943acc3e937f4d7d68ef196d' 
  AND token = 'cpvVIvveRTBq9fYybGwtk7oZb4cayaEBNdK7eyYfBI4=' 
  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"
    }
  }
}