Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '28088b8dc4859cfb02061e95fd6f2e601878927c3c227aae9b8445581f92db26' 
  AND token = 'hFNIN8eKz+c4FTSWRpe+d5qNfmauuhOIHEIr5NH73S8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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