SELECT 
  1 
FROM 
  vi_lock_keys 
WHERE 
  key_id = 'e437b8efdac3bc83a66ae12af380196c721d485c9df1287a89c9653b693033da' 
  AND token = 'Xyypf+r1ZPvzCkmSwQfPVX7ggnRKwNyecnqFpJOF6X4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00012

JSON explain

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