Sandbox

SELECT 
  1 
FROM 
  vi_lock_keys 
WHERE 
  key_id = '2683eff0d5ee2e233133647d9ec1f38b7845d79eea16ecfe9c6225275175c4c0' 
  AND token = 'OaS1V6GrJgX+8EftxEUFKR33ES20GOAFIoCk6cCfs0M=' 
  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"
    }
  }
}