Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'a6701f0c466fd5ab2368d714b69920405e971ed95cb0dab69a9a8032a5a12753' 
  AND token = 'nwi1Q+iUqxW9JA0ds8NNuauFOt9a961Io9r7BLK3ZNc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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