Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'e6c9006d9fdb52a79ef1a10867551f6ca346c7ba95be1ed065b3017acfecd6da' 
  AND token = 'KRGoBR6BH+sDzruA5akcn7nPI+PdgShPyOY8QcCuJ68=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00037

JSON explain

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