Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '6028edccd495fb024e0ec40b370077629bcc2b83786b2d5c88bffd1896d768aa' 
  AND token = 'HUitPvrZRYXf7ycoY75CRzsVH9r/Js6H+/CoRAdMiNo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

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