Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '6a109a07cc45adddb35bdd3543765dd0a3c4d24cc142963a1e8708ae689e9616' 
  AND token = '7Fh+eXLTVz2piqW/0B7oDyi4I5YALqBbQFwS42ExnlM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00027

JSON explain

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