Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '06be0f90140a54b8c558aa46671acaeb1b3d94dfeeb633937c9d16b0ab9b8631' 
  AND token = 'rbNiOzJPOMU5adIipUt/2sfr2rQL3mWK/nRHcTornDI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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