Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '6002a8da6e219a9cdbf9d85cf42839ad14e000bd8303b04a87f12a56aeaa0bf7' 
  AND token = '9y/r+4zvlw0ROyTmv0e83depMrzGJlPn6YqzGnYSIUE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

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