Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2d4331d7781c98f8d049461ab89fd3acb4e76b0889e739922e73ceec678d74de' 
  AND token = 's+eJoAezlEqWIN84tIFzkqQjNEi5q8kR3R8zp+dFix4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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