SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '53d436dc0f6822c122136880bfef73154e4a2280558c457b35d53f9a9c961ff8' 
  AND token = 'kUsHBtzoY9oXgF/2qrdqyzfIrFxG8Bj2qJuX+tQ8Buc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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