Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '08d3aab8102b96f82f58c46888a90becad7ebbdc58eccdea6340015d96488d62' 
  AND token = 'xnWo6uQEF+nJ1Ykt+K9z2LoX/b4+NHuEYT9rPSqu4XA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00043

JSON explain

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