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SELECT 
  1 
FROM 
  vi_lock_keys 
WHERE 
  key_id = '6d2eff13b385673346d2d86a43d11fe3d676f4b470084ee399e308c81be37d4a' 
  AND token = 'zqSZ0nU5pN5T/TkQ47/bl/tyuc40B46jheXOae3NZxY=' 
  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"
    }
  }
}