SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '7abeeb04e525458adbad99ac7577bb2ab4f701209eacf3a2be04a1bf91c3cc19' 
  AND token = 'K9XPg5j+qIkHbQL3VupC+oCBeZ4C5gzmjghrzyJPIjg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00016

JSON explain

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