Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2fb15001c9f1d7fbf9c26af24afc931ee459e1203af08a2db434c950a9978a38' 
  AND token = 'k9aX5OuXduWefsHXOdxXiztYtXTLmxcoo5vfz6YxHDU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00025

JSON explain

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