Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '582c828c52a153099ad4dbe93df200f7b8bbf23b38239421e5c4d7d72eb6bdef' 
  AND token = 'jV3fCOSNuqRp2oMRk60nQM5PTW7/w9RV+HEMCHAN5TE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00016

JSON explain

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