Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd22fb3ff4ffdcce65f05a671d53523905eea66c8cdb8f6809805721b160b3ccb' 
  AND token = 'bzC+IaBXC77o5113rqmo3nQRKEswlgOo/WgUvSvG8ag=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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