Sandbox

SELECT 
  1 
FROM 
  vi_lock_keys 
WHERE 
  key_id = '3383aeb00c8f6df5b3e11051402dc1de55184a7ef1d9d494a6e0a34ce8e54de8' 
  AND token = 'rHI4Ei/5xhg5uAcHeDXMZK97BO+XOR88haww4F5/xf8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00008

JSON explain

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