Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '737560e499c55441bd8a50d7e27617fec9c528b661071708443ef1fdd8bd3d58' 
  AND token = 'BnOEumvLADrrJIr7Xtz5MF9rD3iNgG9d+B8KdUf5RQM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00036

JSON explain

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