SELECT 
  1 
FROM 
  vi_lock_keys 
WHERE 
  key_id = '42532158f33277ec47a0610b10708ae1fbf09ecfa80badd4be6ace4b9ef256a8' 
  AND token = 'hXYl9GbO2YF9gJItxd1XuXOjnD3h7QQEvmnBkLxszYs=' 
  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"
    }
  }
}