Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2ea35305ca52832032128a19ad43c54f6f011618e7f8ad71faca36ee620113e9' 
  AND token = 'heRYYCe5Sg1EmFzeUEEjw3VhUcM6CD16Q/CEzh6QGbg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

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