SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '4babc95232774ddd86c69d46e8a389f48538dc250837d550ead3bf2f1d41b6aa' 
  AND token = 'Cw4qI/aMXYkJQ+w4ci9jKpQIjsoyl9F4lX+1/SalWDg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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