Sandbox

SELECT 
  1 
FROM 
  vi_lock_keys 
WHERE 
  key_id = '5c6465ea98d9cf710ba587510075e0945ff7d15c01abebef0073af69a2de161e' 
  AND token = 'Fp0zwlOTTG8J3+UDxMpIKQzz/VeHWxd83dxHgbri/LE=' 
  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"
    }
  }
}