Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '241c9cded108493cb7ffca55afe50d38ce24fc5a0d78acf77927c95e62623849' 
  AND token = 'WBAa/D3c7DEe3yRLrM2qFrQcPoHI3EeBks2L5qp59Vg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00041

JSON explain

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