Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'daf4dbf81c88ec3822b0150c22c349de100c27bb1a287b053aace9613189166f' 
  AND token = 'zNeaDCxTVaO90ncmOK4qYB6FYmJUEi8G14XahE1zyLc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00039

JSON explain

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