Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '97fae750fcd3968a5a7e306f1ea8be4823ba7993239e50d8ab5bccd353fe41b0' 
  AND token = 'kOdpGw032dL5pAdzg1d50UT2n5BZBChE+XbNzZC2ddM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00039

JSON explain

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