Sandbox

SELECT 
  1 
FROM 
  vi_lock_keys 
WHERE 
  key_id = '516e3eb1a60e0184987aa517a38e9be037b9db1b42bececf976be6d82ef00ce6' 
  AND token = 'uyDSeT47Ca7dUhJdS/xEXCXE5d8bhxTAwoxEjSXGAA4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00009

JSON explain

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