Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'b732f994e2981de15933561cbd812866b8a170ed9fb9f8e05349a2d62498b773' 
  AND token = 'WM1ssYhz2DyR48sP0rvSZEZuQ97NhtV+ZPGEXR/yAeI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00037

JSON explain

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