Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'e1e679fe5a9598ff07386145ecfd92e476fdc52892c2b10e40e759920efb725f' 
  AND token = 'QYb72Eam2v2bQcMrc/Eymnc57tkzbUEHaViWKKqrp6E=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00027

JSON explain

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