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SELECT 
  1 
FROM 
  q_lock_keys 
WHERE 
  key_id = '024e7b49efbbb4c234faf549f9a0c0fb49401643df9af152f140f77d7ca4f62e' 
  AND token = 'nCTZ3IyvApzifeyaHyuPhnu4zxgQ1jWKAYMNvWiks6o=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00022

JSON explain

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