Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '60689e815462b9dfe54dd3a81da4d26968269b9c4770c3ba509d7a986dd37cbc' 
  AND token = 'K6K+BW47NxpHiSv7l/a3N4q29qvS3uNXJrawM0qN5Ug=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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