Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '47172153779f2718f9a2db935caa23878f355e987b3ced33f47e3455ee5c17b5' 
  AND token = 'WBE6VsjMh3RgIQ2KFjGPb14bRxkVx8h4+tPKPPdW1ZM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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