Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'abe33eeadd87625c5e236f7e8793b056a9c38b172b9b85f0cf0dbe73d5a83c6d' 
  AND token = '0MPf5hmRXGm4h5YC6u6D5A6a2iWTFxKvyUJgybEkD2o=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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