Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '09bb8cd97d737803fb82d4f327eacde5df502e183ad97e544f0aa184daba8f53' 
  AND token = 'lVghZY6ocFaKktnOfkVtseVvcgG5arVCK5izEQoe+/c=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00016

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}