Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2bf7de1552d26537603239a146799885ba98de64e3e4bb5c10323e62ae23f71b' 
  AND token = 'QtOpP88aKGoqJbo2yx7buqPRprQdtEkWevsLfj/DYBw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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