SELECT 
  1 
FROM 
  vi_lock_keys 
WHERE 
  key_id = '1ca76ba1ec5a957d192a82dc6d6518680cf4929179d14f3891dea31727270df5' 
  AND token = 'CoDZR+u4zmc7AzUynmBDUXvqKvR/dx5gTwuItAUUBAc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00009

JSON explain

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