Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '16ee2840492c32286db2a6947e91e88522aa266ed66e673963c1cfaa6ed02d8a' 
  AND token = 'Uif90o91foN4H7wpJAAF7TkkrSdGlaFItz0WwlJlSxg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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