Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '40c16841735ae481820d7d7debe44ac9ebf0beaa2ecb5fd1f744b8a3f06b2750' 
  AND token = 'vRyfyq0t4Tu5rWLDtHkoTbo+jB7MtkUYyikDWbSd8Ks=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00056

JSON explain

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