SELECT 
  1 
FROM 
  vi_lock_keys 
WHERE 
  key_id = 'b0bdfd0c5140b78f01526846e0549320a8aae5a263d9ec7037972435da7f5f42' 
  AND token = 'Od6+2VnrSuYNhzFvHZYeEZqFqP9OV/SuAyDZG3yK3FQ=' 
  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"
    }
  }
}