Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'cf3860d612125d4346b010e834913e35e6d5506fd1289c4ba412da2170e5935d' 
  AND token = '2pJF+Ex5mUphHoSz476WFtkdoDdgymfQJ3XV7PJGTD8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00027

JSON explain

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