Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '616d7ac046386a23b0c9a4f8c45ab4e0923e1d56375e16f8d85ba2ff17cfe540' 
  AND token = 'M292seIDYPovuIJA5/JI80WKlaMHmEiIQ0ZrlWGxi7Y=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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