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SELECT 
  1 
FROM 
  q_lock_keys 
WHERE 
  key_id = '532bf17d4aa40dc5498d49d4a71194ac56288af3c754ef0fe71b4b0d2171b3da' 
  AND token = 'c2kjPaSCjVUU3Iyat7SybYlBd130zCexsxbwPlpuDx0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00025

JSON explain

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