SELECT 
  1 
FROM 
  vi_lock_keys 
WHERE 
  key_id = 'e035495c2ae7d973c921ca1da56267b1c35fa49df3df830c8c3bff687b81c274' 
  AND token = '1S3KpYAnR+qlb4TDsooWDE9QZJP3C+fgoUvsQCr376o=' 
  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"
    }
  }
}