Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd24a97fe078778ad6e77de8d1981fa82e3823264bde6b8ee81195f177e406e06' 
  AND token = '8LiCLCVyPn9C1iElzVwm8DbOLfqqzE46tdwk1Jwodzw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00034

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}