Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'aad598f157e66da64ca24fc26b4074b5b0c7a754b383ecf4a93de9ac7c8af984' 
  AND token = 'HidUduZ8Eso5rvvdcEWqxztDn81BsAzgjLF7bHVutgU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00049

JSON explain

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