Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '7336d3868575bdb086e52f813aa62c8fc6adf048cc230a15088fdab5d40e0d30' 
  AND token = 'FqNSQgexyw8jGAOWoUpd2Ie5CoHQi6i9j6ICoRn4CUY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00023

JSON explain

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