Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '5fe777734dcd9747a09f5000acb9a86f1a74a3e19f4c4d6d13a2ab515b1de734' 
  AND token = '4spK7StodUhZTOv8sZxV2cGTWy/HCCXYLLzYyUIEhvY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00027

JSON explain

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