Sandbox

SELECT 
  1 
FROM 
  vi_lock_keys 
WHERE 
  key_id = '8191fc148ca20c53f74795db24b93b38bc304a88df0e1313204c9f0a8ea6a3f7' 
  AND token = 'Yt87PIoZVQJJjscvbypeGJQb3de+7WYsQ58DhxjFfRs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00010

JSON explain

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