Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '527eb288918ab594b1c59d4195e375660534ea9b1105cdb4739d31e09928af7d' 
  AND token = 'u6y2mLx60lMb4bEpspA/i9CPo/OZNf0NNlMheDtt7/0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00016

JSON explain

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