Sandbox

SELECT 
  1 
FROM 
  vi_lock_keys 
WHERE 
  key_id = '567e0ee2f7d0d191593922962d40cb035fd9a1083c8be70ed6089c712ff80250' 
  AND token = 'k2q/iYzjFZqhvjYtIlEpSCpdfpY0nuPsaLoQxhRaVdc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00011

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}