Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '654ebf261cc5a6f002a9061c93897b2a5150e62c1a1f27d85fc30e0a4e41a555' 
  AND token = 'PvIYX6FSjPUZBodl31y/NGugDDkT6kvgJGnxwnULTdA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00016

JSON explain

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