Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '87bd0848c98a50603740f843b51c939c5605c53ca66ca96da8a8b6f08bcaa25e' 
  AND token = 'neOBBmk716JS9yBrGTrCiNm3+GFwnq8g+Sb/atzah4Y=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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