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SELECT 
  1 
FROM 
  vi_lock_keys 
WHERE 
  key_id = '58abd9aab62f5cf5613fab45de273fca1e64f9df3156357d77467fbdf64714f7' 
  AND token = 'nT3CbfJSVhWMq9DmfNbyabs07kKOfxfiGw9dbZY8f3s=' 
  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"
    }
  }
}