Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2359c8d4d987c4fe79ab6f46fc2179ccfd078c0eb532e4c2d4e6f0ef0915c815' 
  AND token = 'kLrQ91L2ZXRiPa62RCyZ98royRKNqbDrAL1WsAMhMS4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00041

JSON explain

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