Sandbox

SELECT 
  1 
FROM 
  vi_lock_keys 
WHERE 
  key_id = '25779903b1905a3fbd7b3d76c0d49148c463ec2da955f2289fbb1bfe914bbb4d' 
  AND token = 'Zhzk+MhzdUTR60zxKoTH7nloA4eYB0ln1ED0BmZeItw=' 
  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"
    }
  }
}