Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '34a459d6bd10065bf4174327ad5bb4221ba87e7e67858bd46c5fe13ec8088b60' 
  AND token = 'VM/kIPFTd4R65f9H0XuUxjgtCtsy+CTbWoY9UIU1qR8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

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