Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '5561c1b77b83f8dfc2de42fe1ab35255af9ff566713fa265eae9a9fde9be7e27' 
  AND token = 'qsUzMFysVEsHdBL67bj8rrsCoP6WTOJRHpG6beDyMOE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

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