Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0abdcdb628cb8483daf68328567076c1d7d1f2382af69c506b219d6b42a2c2b6' 
  AND token = 'IASkEuHls/PqtdX5F0yufK/RmpiTMUfN7Jmq45WsZJs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

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