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SELECT 
  1 
FROM 
  q_lock_keys 
WHERE 
  key_id = '536b13bd40dc32efa8fd65a0bc5deb5444488e93b4bbba7f245943bde6d2491d' 
  AND token = 'zkMM6ntP8iogndkwFMKS4lzlUvcNgGhTxshYmPQrIyk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00034

JSON explain

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