SELECT 
  1 
FROM 
  vi_lock_keys 
WHERE 
  key_id = '3a83835d2e33a685fc7044c49b4c4d6927c773204cdfaadf5ce9a4a874041865' 
  AND token = 'dUnzWY+kl4PiT6OkxajB/svoxrCKGWI2k67AVrbkZnI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00013

JSON explain

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