Sandbox

SELECT 
  1 
FROM 
  q_lock_keys 
WHERE 
  key_id = 'b604230a8b8b5f79c9ccaa24187b35bafc02ec1ea07a5af273fed3b5aec359aa' 
  AND token = '53OFdfRH8GR8Tq7h9/8rNiWZJ25MXo9WtzQWAcyiskw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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