SELECT 
  1 
FROM 
  q_lock_keys 
WHERE 
  key_id = 'd865fb54c0c419c31324de67da161b5d2ce59348aa0e1b0a482b93cc463a2280' 
  AND token = 'JkQgtziXPmKfCX5lh/N3zGUAn+GoQUTUaIREpoboUr8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00027

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}