Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '009afcdd5461e1e612ad10f034d8baeb1bac3a51f72b93e6fa83bc3ecaf05897' 
  AND token = 'g1Ip1OcPx6pav8N3tQEWgTqQSEYz5jD/WcwYiZDtzKc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}