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SELECT 
  1 
FROM 
  vi_lock_keys 
WHERE 
  key_id = 'e93b5f1854b17debed2fcaf8bbb4da2ffbce7cac12984ef6a21b47fdf5b05905' 
  AND token = '+yooMABLO+XNfvF0KVyeUcif+X28TeCOgn/53DVVLlM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00008

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}