SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd213494174451f64eab1e1ae2452829108fe884effb8a162301b6477a5047f2b' 
  AND token = 'Vw27XZmTp1Ly+Bu3XmeaH/ZKvvHpfdOiXDhLJFWWFqc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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